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A ball of mass 0.203 kg has a velocity of 1.43 m/s right; a ball of mass 0.291 kg has a velocity of 0.396 m/s left. They meet in a head-on elastic collision. Find their velocities after the collision. (assume + is right and - is left) m/s (first ball) m/s (second ball).
A 2.10kg snowball is fired from a cliff 8.55 m high with an initial velocity of 11.90 m/s, directed 47.0° above the horizontal. (a) Using energy techniques, find speed of the snowball as it reaches the ground below the cliff. What is that speed (b) i..
A river narrows at a rapids from a width of 15m to a width of only 6.0m. The depth of the river before the rapids is 2.7m ; the depth in the rapids is 0.70m. Find the speed of water flowing in the rapids
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.350mm wide. The diffraction pattern is observed on a screen 3m away.
How much work is needed to push a 137- kg packing crate a distance of 2.65 m up an inclined plane that makes an angle of 27 o with the horizontal, when inclined plane is frictionless
What is EMF in the secondary circuit
At t = 5 s, an object moving on the x-axis at x = 3 m is traveling at 8 m/s i. At t = 9 s, it is at x = 17 m and its velocity is -1 m/s i. Find the average acceleration for this interval
A monoenergetic beam of neutrons, cp = 4 X 1 0 10 neutrons/cm2-sec, impinges on a target 1 cm2 in area and 0. 1 cm thick. How many neutron interactions per second occur in the target
A child pulls on a wagon handle at an angle 37° above the horizontal with a force of 45 N. what is the mass of the wagon
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, Is our solar system typical in having all of its planets in very low eccentricity orbits
An iron bar 40 cm long is braised to a copper bar 50 cm long and of the same diameter. What is the heat flow down the rod if its cross-sectional area is 2.50 cm2
wheel A of radius rA = 11 cm is coupled by belt B to wheel C of radius rC = 20 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find out the time needed for wheel C to reach an angular speed of 100 rev/min,..
q1. a 3000-kg blue truck travelling east collides and sticks to a 4000-kg orange truck travelling with a speed of 7.3
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